| Portsmouth to Sanford (Maine) | 3,191.81 mi (5,136.72 km) |
| Portsmouth to Sanford (North Carolina) | 3,883.95 mi (6,250.61 km) |
| Portsmouth to Sanger (California) | 5,333.74 mi (8,583.83 km) |
| Portsmouth to Santa Ana (California) | 5,447.45 mi (8,766.83 km) |
| Portsmouth to Santa Barbara (California) | 5,468.13 mi (8,800.10 km) |
| Portsmouth to Santa Clara (California) | 5,370.50 mi (8,642.98 km) |
| Portsmouth to Santa Clara (Oregon) | 5,017.40 mi (8,074.72 km) |
| Portsmouth to Santa Clarita (California) | 5,429.10 mi (8,737.29 km) |
| Portsmouth to Santa Cruz (California) | 5,394.71 mi (8,681.94 km) |
| Portsmouth to Santa Fe (New Mexico) | 4,929.52 mi (7,933.30 km) |
| Portsmouth to Santa Fe (Texas) | 4,837.51 mi (7,785.21 km) |
| Portsmouth to Santa Fe Springs (California) | 5,442.31 mi (8,758.55 km) |
| Portsmouth to Santa Maria (California) | 5,462.42 mi (8,790.92 km) |
| Portsmouth to Santa Monica (California) | 5,450.92 mi (8,772.41 km) |
| Portsmouth to Santa Paula (California) | 5,451.19 mi (8,772.84 km) |
